Final answer:
The specimen collection time recommendation for blood culture is a minimum of 18 hours after starting the enrichment culture, preferred one day after starting. It should be collected no later than the day before the scheduled investigation period.
Step-by-step explanation:
The specimen collection time recommendation for blood culture is a minimum of 18 hours after starting the enrichment culture. It is preferred to collect the sample one day after starting the enrichment culture. The collection should be done no later than the day before the scheduled investigation period.